Safety assembly structure of curtain bead chain

Abstract

A safety assembly structure of a curtain bead chain is revealed herein. It comprises a bead chain having a string with a plurality of beads and having a safety assembly thereon for controlling a curtain. The safety assembly includes two insert blocks for joining to both ends of the string of the bead chain and a connecting unit wrapping around the two insert blocks for connecting thereof.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a safety assembly structure of a curtain bead chain to prevent children's neck from being wrapped around by the bead chain.[0003]2. Description of Related Art[0004]Generally, retractor structures on existing curtains are equipped with a flexible pulling cord for users to control the curtain, allowing the curtain to vertically or horizontally shrink or extend. The conventional curtain structure is provided with a rotating axis with a curtain wrapped up thereon, and a retractor having a bead chain is disposed on the rotating axis. The retractor and the rotating axis can be driven to control the curtain by pulling the bead chain. However, bead chains are ring-shaped and have a relative high toughness, unsophisticated children who are curious about bead chains and playing them would sometimes have choking accidents due to their necks being wrapped around by bead chains. To avoid the accident...

AI Technical Summary

Benefits of technology

The present invention is aimed at providing a safety assembly structure for a curtain bead chain to prevent children's necks from getting wrapped around by the chain. This is a safety measure to protect children's safety.

Problems solved by technology

However, bead chains are ring-shaped and have a relative high toughness, unsophisticated children who are curious about bead chains and playing them would sometimes have choking accidents due to their necks being wrapped around by bead chains.

1. The structure is only suitable for a pulling cord having a large diameter, such as 8 mm.

2. It is difficult to manufacture the pulling cord having a diameter less than 4.5 mm in a mold and even difficult to model the same.

3. Plastic injection molding in a small space may cause a volume change due to cold shrinkage, resulting in an increased defective rate.

4. The second connecting piece having a diameter of 4.5 mm cannot adequately wrap up the string so that the string is prone to detach from the connecting piece and cannot bear too much tension in a case of using large curtains.

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